7447 LOGIC GATE
24,20 EGP
Description
7447 LOGIC GATE
47 IC BCD to 7-Segment Decoders/Drivers Common Anode DIP-16
The 7447 IC BCD to 7-Segment Decoder/Driver is a widely used digital IC designed to convert a 4-bit Binary Coded Decimal (BCD) input into signals that can directly drive a common anode 7-segment display. Packaged in a standard DIP-16 form, this IC simplifies numeric display interfacing in digital systems by decoding binary values (0–9) into the corresponding decimal digit on the display. It integrates active-low outputs, lamp test, ripple blanking, and latch-enable functions for versatile control. Ideal for counters, digital clocks, calculators, and other display-based applications, the 7447 ensures efficient and reliable conversion of BCD data into readable visual output.
Features
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Converts BCD (4-bit) input into 7-segment display outputs.
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Designed for common anode 7-segment displays.
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Provides active-low outputs for direct display driving.
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Supports lamp test (LT), ripple blanking (RBI/RBO), and latch enable (LE) functions.
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Can display decimal digits 0 to 9 with proper decoding.
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Open-collector outputs allow easy interfacing with LEDs.
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Low power consumption with reliable TTL logic compatibility.
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Packaged in DIP-16 for easy breadboard and PCB integration.
Pinout
Pin Configuration
Here’s a typical pinout for the 7447 IC (assuming it’s in a 16-pin DIP package):
Pin Number |
Pin Name |
Description |
|---|---|---|
1 |
a |
Segment ‘a’ output (controls segment a) |
2 |
b |
Segment ‘b’ output (controls segment b) |
3 |
c |
Segment ‘c’ output (controls segment c) |
4 |
d |
Segment ‘d’ output (controls segment d) |
5 |
e |
Segment ‘e’ output (controls segment e) |
6 |
f |
Segment ‘f’ output (controls segment f) |
7 |
g |
Segment ‘g’ output (controls segment g) |
8 |
Vss |
Ground |
9 |
BL |
Blanking input (active low) |
10 |
D |
BCD input (D) |
11 |
C |
BCD input (C) |
12 |
B |
BCD input (B) |
13 |
A |
BCD input (A) |
14 |
Vcc |
Positive voltage supply (typically +5V) |
15 |
LE |
Lamp test input (active low) |
16 |
LT |
Lamp test input (active low) |
Dimensions
Specifications
Specification |
Details |
Part Number |
SN74HC47N |
Datasheet |
SN74HC47N |
Series |
4700 |
Logic Family |
HC (High-Speed CMOS) |
Type |
Decoder |
Part Status |
Active |
Function |
BCD to 7-Segment Decoder/Driver |
Output Type |
Active-Low for Common Anode Displays |
Number of Inputs |
4 (BCD: A, B, C, D) |
Number of Outputs |
7 (a, b, c, d, e, f, g) |
Mounting Style |
Through Hole |
Package |
DIP-16 |
Voltage Supply Source |
Single Supply |
Supply Voltage (Vcc) |
2V – 6V |
Typical Vcc |
5V |
High-Level Input Voltage (VIH) |
3.15V min (at Vcc = 4.5V) |
Low-Level Input Voltage (VIL) |
1.35V max (at Vcc = 4.5V) |
High-Level Output Current (IOH) |
–5.2 mA (at Vcc = 4.5V) |
Low-Level Output Current (IOL) |
5.2 mA (at Vcc = 4.5V) |
Propagation Delay (tpd) |
14 ns (at Vcc = 5V, CL = 15 pF) |
Power Dissipation |
Low (CMOS technology) |
Operating Temperature |
–40°C to +85°C |
Applications
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Digital clocks for displaying numeric time values.
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Counters and timers to show count outputs on 7-segment displays.
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Calculators and basic arithmetic display units.
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Digital meters such as voltmeters, ammeters, and frequency counters.
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Scoreboards for sports and gaming applications.
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Embedded systems for numeric display interfaces.
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Learning and educational kits for digital logic and display interfacing.
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Industrial control panels requiring numeric status indicators.
Package Contents
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1 x 7447 IC BCD to 7-Segment Decoders/Drivers Common Anode DIP-16
Shipping & Delivery
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